<template >
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item> 
    </el-breadcrumb>

     <!-- 卡片视图区域 -->
      <el-card>
        <!-- 搜索与添加区域 --> 
        <el-row :gutter="20">
          <el-col :span="7">
            <el-input placeholder="请输入内容"  clearable  v-model="queryInfo.query" @clear="getUserList">
              <el-button  slot="append" icon="el-icon-search" @click="getUserList"></el-button>
            </el-input>
          </el-col>

           <el-col :span="4">
           <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
          </el-col> 
        </el-row>


         <!-- 用户列表区域 --> 
         <el-table :data="userlist" border stripe>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="姓名" prop="username"> </el-table-column>
            <el-table-column label="邮箱" prop="email"> </el-table-column>
            <el-table-column label="电话" prop="mobile"> </el-table-column>
            <el-table-column label="角色" prop="role_name"> </el-table-column>
            <el-table-column label="状态" prop="mg_state"> 
                <template slot-scope="scope">
                   <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                   </el-switch>
                </template> 
            </el-table-column>
            <el-table-column label="操作" width="180px"> 
                <template slot-scope="scope">
                    <!--修改按钮 --> 
                    <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                     <!--删除按钮 --> 
                    <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                     <!--分配角色按钮 --> 
                     <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                       <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                     </el-tooltip>
                   
                </template>
            </el-table-column>
         </el-table>


           <!--分页区域 --> 
            <el-pagination
              @size-change="handleSizeChange"
              @current-change="handleCurrentChange"
              :current-page="queryInfo.pagenum"
              :page-sizes="[1, 2, 5, 10]"
              :page-size="queryInfo.pagesize"
              layout="total, sizes, prev, pager, next, jumper"
              :total="total">
            </el-pagination>

           <!--添加用户的对话框 --> 
            <el-dialog
              title="添加用户"
              :visible.sync="addDialogVisible"
              width="50%"
              @close="addDialogClosed">

               <!--内容主题区域 --> 
              <el-form ref="addFormRef" :model="addForm"  :rules="addFormRules"  label-width="70px">
                
                <el-form-item label="用户名" prop="username">
                  <el-input v-model="addForm.username"></el-input>
                </el-form-item>

                 <el-form-item label="密码" prop="password">
                  <el-input v-model="addForm.password"></el-input>
                </el-form-item>

                 <el-form-item label="邮箱" prop="email">
                  <el-input v-model="addForm.email"></el-input>
                </el-form-item>

                 <el-form-item label="手机" prop="mobile">
                  <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>

              </el-form>


                <!--底部区域 --> 
              <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
              </span>
            </el-dialog>


              <!--修改用户的对话框 --> 
            <el-dialog
              title="修改用户"
              :visible.sync="editDialogVisible"
              width="50%"
              @close="editDialogClosed">

               <!--内容主题区域 --> 
              <el-form ref="editFormRef" :model="editForm"  :rules="editFormRules"  label-width="70px">
                
                <el-form-item label="用户名">
                  <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
 
                 <el-form-item label="邮箱" prop="email">
                  <el-input v-model="editForm.email"></el-input>
                </el-form-item>

                 <el-form-item label="手机" prop="mobile">
                  <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>

              </el-form>
 
                <!--底部区域 --> 
              <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
              </span>
            </el-dialog>


    <!-- 分配角色的对话框 --> 
      <el-dialog
          title="分配角色"
          :visible.sync="setRoleDialogVisible"
          width="50%"
          @colse="setRoleDialogClosed"
          >
        
          <div>
             <p>当前的用户:{{userInfo.username}}</p>
             <p>当前的角色:{{userInfo.role_name}}</p>
              <p>分配新角色:
               <el-select v-model="selectedRoleId" placeholder="请选择">
                <el-option
                  v-for="item in roleslist"
                  :key="item.id"
                  :label="item.roleName"
                  :value="item.id">
                </el-option>
              </el-select>
              </p>
          </div>
         
          <span slot="footer" class="dialog-footer">
            <el-button @click="setRoleDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
          </span>
        </el-dialog>

      </el-card>
  </div>
</template>

<script>
export default {
  data(){
    // 自定义 验证邮箱的规则
    var checkEmail = (rule,value,cb)=>{
      const regEmail =  /^[A-Za-z\d]+([-_.][A-Za-z\d]+)*@([A-Za-z\d]+[-.])+[A-Za-z\d]{2,4}$/
     // 验证通过
     if(regEmail.test(value)){
        // 合法的邮箱
        return cb();
      }

      cb(new Error('请输入合法的邮箱'))
    }

    // 自定义 验证手机号的规则
    var checkMobile = (rule,value,cb)=>{
       const regMobile = /^[1][3,4,5,7,8][0-9]{9}$/
       if(regMobile.test(value)){
         return cb()
       }
       cb(new Error('请输入合法的手机号'))
    }

    return {
      // 获取用户列表的参数
      queryInfo:{
        query:'',
        // 当前页数
        pagenum:1,
        // 当前每页显示多少条数据
        pagesize:2
      },
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible:false,
     // 控制修改用户对话框的显示与隐藏
      editDialogVisible:false,
      // 查询到的用户信息对象
      editForm:{},
      userlist:[],
      total:0 ,
      // 添加用户的表单数据
      addForm:{
        username:'',
        password:'',
        email:'',
        mobile:''
      },
      // 添加表单的验证规则对象
      addFormRules:{
        username:[
          {required: true, message:'请输入用户名', trigger:"blur"},
          {min:3,max:10,message:'用户名的长度在3~10位之间', trigger:"blur"}
        ],
         password:[
          {required: true, message:'请输入密码', trigger:"blur"},
          {min:6,max:15,message:'密码的长度在6~15位之间', trigger:"blur"}
        ],
         email:[
          {required: true, message:'请输入邮箱', trigger:"blur"},
          {validator:checkEmail,trigger:'blur'}
         ],
         mobile:[
             {required: true, message:'请输入手机号', trigger:"blur"},
             {validator:checkMobile,trigger:'blur'}
         ]
      },
      // 修改表单的验证规则对象
      editFormRules:{
         email:[
          {required: true, message:'请输入邮箱', trigger:"blur"},
          {validator:checkEmail,trigger:'blur'}
         ],
         mobile:[
             {required: true, message:'请输入手机号', trigger:"blur"},
             {validator:checkMobile,trigger:'blur'}
         ]
      },
      // 控制分配角色的 对话框显示与隐藏
     setRoleDialogVisible:false,
     // 需要被分配角色的用户信息
     userInfo:'',
     // 所有角色的数据列表
     roleslist:[],
     // 已选中的角色ID 值
     selectedRoleId:''
    }  
  },
  created() {
    this.getUserList()
  },
  methods:{
    async getUserList(){
      const {data:res} = await this.$http.get('users',{params: this.queryInfo})
      // console.log(res)

      if(res.meta.status !== 200){
          return this.$message.error('获取用户列表失败')
      }
      this.userlist = res.data.users
      this.total = res.data.total 
    },
    // 监听 pagesize 改变的事件
    handleSizeChange(newSize){
      console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 页码值 改变的事件
    handleCurrentChange(newPage){
      console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听 switch 开关状态的改变
    async userStateChanged(userInfo){ 
      const {data: res} = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
     if(res.meta.status !== 200){
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error(res.meta.msg)
      }
      // 更新状态成功
      this.$message.success(res.meta.msg)
   },
 
  // 监听对话框关闭触发事件 
   addDialogClosed(){ 
      // 重置表单 清空表单
      this.$refs.addFormRef.resetFields() 
   },

   // 点击按钮 添加新用户
   addUser(){
      this.$refs.addFormRef.validate(async valid =>{
        // console.log(valid)
        if(!valid) return
        // 发送添加用户请求
        const {data: res}  = await this.$http.post('users',this.addForm)
        if(res.meta.status !== 201){
          this.$message.error('添加用户失败')
        } 
        this.$message.success('添加用户成功')
        // 隐藏添加用户的对话框
        this.addDialogVisible = false
        // 重新获取列表数据
        this.getUserList();
      })
   },

  //  展示编辑用户的对话框
   async showEditDialog(id){
    //  console.log(id)
      this.editDialogVisible = true;

      const {data: res} = await this.$http.get('users/' + id)
      if(res.meta.status !== 200){
        return this.$message.error('查询用户信息失败')
      }
      console.log(res.data)
      this.editForm = res.data

   },


 // 监听修改对话框关闭触发事件 
   editDialogClosed(){ 
      // 重置表单 清空表单
      this.$refs.editFormRef.resetFields() 
   },
   // 修改用户信息 
    editUserInfo(){
     this.$refs.editFormRef.validate(async valid=>{
        if(!valid) return
        // 发送修改用户信息的数据请求
        const {data: res}= await this.$http.put('users/' + this.editForm.id,{
          email:this.editForm.email,
          mobile: this.editForm.mobile
        })

        if(res.meta.status !== 200){
            return this.$message.error('更新用户信息失败')
        } 

        // 关闭对话框
        this.editDialogVisible = false 
        // 刷新数据列表
        this.getUserList() 
        // 提示修改成功
        this.$message.success('更新用户信息成功')

     })
   },

   // 根据id 删除用户
    async removeUserById(id){
     // 弹窗询问用户是否删除
    //  this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
    //       confirmButtonText: '确定',
    //       cancelButtonText: '取消',
    //       type: 'warning'
    //     }).then(() => {
    //       this.$message({
    //         type: 'success',
    //         message: '删除成功!'
    //       });
    //     }).catch(() => {
    //       this.$message({
    //         type: 'info',
    //         message: '已取消删除'
    //       });          
    //     });


      // 简写
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err);
        // console.log(result) 
        // 判断用户是否选择删除
        if(confirmResult !== 'confirm'){
            return this.$message.info('已取消删除');
        }
    
        // console.log('确认了删除')
        // 发送删除请求
        const {data: res }= await this.$http.delete('users/' + id)

        if(res.meta.status !== 200){
          return this.$message.error('删除用户失败')
        }

        this.$message.success('删除用户成功')
        this.getUserList()
   },
   // 展示分配角色的 对话框 
   async setRole(userInfo){ 
     this.userInfo = userInfo

     // 获取角色列表
     const {data:res} = await this.$http.get('roles')

      if(res.meta.status !== 200){
        return this.$message.error('获取角色失败')
      }
      this.roleslist = res.data

      this.setRoleDialogVisible = true
   },
   // 点击按钮 分配角色
   async saveRoleInfo(){
     if(!this.selectedRoleId){
        return this.$message.error('请选择要分配的角色')
     }

     const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectedRoleId})

     if(res.meta.status !== 200){
        return this.$message.error('更新角色失败')
      }
    this.$message.success('更新角色成功')
    this.getUserList()
    this.setRoleDialogVisible = false
   },
   // 监听分配角色对话框的关闭事件
   setRoleDialogClosed(){
      this.selectedRoleId = ''
      this.userInfo = ''
   }

  }
  
}
</script>

<style scoped>
  
</style>